What does this LOINC code represent?

This LOINC code identifies a lab observation, measurement, question, or clinical concept in a standardized format.

Is this enough to understand my test result?

No. The code identifies the test or observation, but the interpretation depends on the actual result, reference range, and clinical context.

LOINCActiveBoth

LOINC Code 63364-4: TSH receptor Ab Qn (BldCo)

Name: LOINC Code 63364-4: TSH receptor Ab Qn (BldCo)
Creator: HealthAssure Clinical Team
Published: 2026-05-25T17:13:11.347Z

63364-4 is a LOINC code used to identify TSH receptor Ab Qn (BldCo) in laboratory and clinical observation data. You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges. LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Thyrotropin receptor Ab. It is commonly used with the system or sample type BldCo.

Reviewed by HealthAssure Clinical TeamUpdated 25 May 2026

What is this code?

LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Thyrotropin receptor Ab. It is commonly used with the system or sample type BldCo.

When is it used?

Used in lab systems, EHRs, and clinical data exchange.
May identify a test, observation, survey item, or clinical document request rather than a diagnosis.
Status: ACTIVE
Order vs observation: Both

What it does not mean

The code identifies the observation or test, not the actual result.

Key facts

Thyrotropin receptor Ab [Units/volume] in Cord blood
Thyrotropin receptor Ab
ABS; Aby; Antby; Anti; Antibodies; Antibody; Arbitrary concentration; Autoantibodies; Autoantibody; Blood - (umbilical) cord; Cord (umbilical) blood; Cord bld; Cord blood; Endocrine; Endocrinology; Gyn; Gynecology; OB; ObGyn; Obstetrics; Point in time; QNT; Quan; Quant; Quantitative; Random; Rec; Recept; Receptors; Recp; Recptr; Serology; Thyroid stimulating hormone; Thyroid stimulating hormone receptor antibody; Thyrotropic hormone; TRAb; TSH; TSH Recep

Where you may see this code

You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges.

Related SNOMED CT concepts

705114005SNOMED CT mapping for TSH receptor Ab Qn (BldCo) (63364-4)

Related observations and tests

SNOMED_CT 705114005high

LOINC Code System

Source: LOINC-SNOMED cooperation package

Common synonyms

TSH receptor Ab Qn (BldCo)Thyrotropin receptor Ab [Units/volume] in Cord bloodTSH Recep Ab BldCo-aCncThyrotropin receptor AbSEROTSH receptor antibody, Cord bloodACnc

Frequently asked questions

Code details

Code63364-4

SystemLOINC

Display nameTSH receptor Ab Qn (BldCo)

DescriptionThyrotropin receptor Ab

Short nameTSH Recep Ab BldCo-aCnc

ComponentThyrotropin receptor Ab

PropertyACnc

TimingPt

System (specimen)BldCo

ScaleQn

ClassSERO

Example unitsIU/L

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.36

Last changed2.70

Consumer names

TSH receptor antibody, Cord blood

Part names

Thyrotropin receptor AbACncPtBldCoQnArbitrary ConcentrationPoint in time (spot)Blood cord

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from LOINC. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.